Deducir una conclusión de cada uno de los conjuntos de premisas siguientes, aplicando la regla del modus tollendo tollens. (1) ¬ p → q ʌ ¬s
(2) ¬ (q ʌ ¬s)
(3)

You dug a hole that was 8 feet deep. after taking a short break, you dug down 3 more feet in the same hole. when finished digging, a tractor accidentally filled the hole with 4 feet of dirt. how deep is your hole now?

Javier bought a painting for $150. each year, the painting's value increases by a factor of 1.15. which expression gives the painting's value after 77 years?

What percent of $1.00 are a nickel and a dime?